This is an Ending Diagonal. Notice, it is a contracting ED, and incidentally, the intersection of its top and bottom trend lines provide an ideal end point. A little bird told me 5375 was ripe for selling, and this picture makes me confident he was right. ATH 5362.75 at the time of this post, but calling it, anyway, as late as 5375.75. If not today, maybe in the week.
Best, Cuz